Ok, so on the journey to figure out WHY the car has so much play in the drivetrain (back forth bucking due to slack taken up after accelerating from letting off) I have ruled out the Differential and backlash.
SO now I'm looking at the drive shaft as a possibility, as I said before the front flex disc is ok, the center bearing seems OK, and the rear flex disc is SORT of ok. The rear flex disc CENTER sleeve has been wallowed out... I'm guessing this is from the back forth oscillations over time (I try to keep them under control).
I took some video with the car in 2nd gear and me under it rotating the driveshaft left and right. The majority of the play appears to be coming from the front ie the transmissions flange.
Would you say this much play in gear from the tranny is too much? could this be a culprit? warped flywheel maybe?
Ignore the harmonic ring you see torn off behind the front flex disc... ill hack that the rest of the way off later.
https://www.youtube.com/watch?v=SuB6tWz_B6c&feature=c4-overview&list=UUXZE65xxN3L_yKTSBXIjpPg
https://www.youtube.com/watch?v=52m9A_zktbo&feature=c4-overview&list=UUXZE65xxN3L_yKTSBXIjpPg
[YT]SuB6tWz_B6c[/YT]
[YT]52m9A_zktbo[/YT]
Let me know what your thoughts are on this back forth slop.